Bug 1390535

Summary: semodule_package tries to mmap() an empty file
Product: Red Hat Enterprise Linux 7 Reporter: Milos Malik <mmalik>
Component: policycoreutilsAssignee: Petr Lautrbach <plautrba>
Status: CLOSED ERRATA QA Contact: Dalibor Pospíšil <dapospis>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.3CC: dapospis, dwalsh, lvrabec, mgrepl, mmalik, plautrba, ssekidde
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: policycoreutils-2.5-16.el7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
: 1390536 (view as bug list) Environment:
Last Closed: 2017-08-01 16:16:12 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description Milos Malik 2016-11-01 10:27:47 UTC 
Description of problem:
* already fixed in upstream, but it still affects RHEL-7.3

Version-Release number of selected component (if applicable):
policycoreutils-debuginfo-2.5-9.el7.x86_64
policycoreutils-sandbox-2.5-9.el7.x86_64
policycoreutils-python-2.5-9.el7.x86_64
policycoreutils-newrole-2.5-9.el7.x86_64
policycoreutils-devel-2.5-9.el7.x86_64
policycoreutils-gui-2.5-9.el7.x86_64
policycoreutils-2.5-9.el7.x86_64

How reproducible:
* always

Steps to Reproduce:
# checkmodule -M -m -o mypolicy.mod mypolicy.te
checkmodule:  loading policy configuration from mypolicy.te
checkmodule:  policy configuration loaded
checkmodule:  writing binary representation (version 17) to mypolicy.mod
# rm -f mypolicy.fc mypolicy.nc
# touch mypolicy.fc mypolicy.nc
# semodule_package -o mypolicy.pp -m mypolicy.mod --fc mypolicy.fc
semodule_package:  Failed to mmap mypolicy.fc:  Invalid argument
# semodule_package -o mypolicy.pp -m mypolicy.mod --nc mypolicy.nc
semodule_package:  Failed to mmap mypolicy.nc:  Invalid argument
# 

Actual results:
* semodule_package calls mmap() on an empty file

Expected results:
* semodule_package doesn't call mmap() on an empty file
Comment 1 Petr Lautrbach 2017-03-30 07:10:37 UTC 
Probably fixed by this patch https://github.com/SELinuxProject/selinux/commit/266c16ff535a0d7fc89add6db3c13a879be6cdd5
Comment 5 errata-xmlrpc 2017-08-01 16:16:12 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2017:1883